Thus, the structure of 2 was elucidated as 6β-acetoxy-1α-acetoxyacetate-8β-cinnamoyloxy-4β-hydroxy-12-tigloyloxydihydro-β-agarofuran. Compound 3 was isolated as a colourless gum and had a molecular formula of C33H42O12 as suggested by HRESIMS. The NMR data of 3 were similar to ...